01 -
Preheat oven to 200°C. Place grated zucchini in a colander, sprinkle with salt, and let stand 10 minutes to draw out moisture. Squeeze firmly to remove excess liquid.
02 -
In a large bowl, combine squeezed zucchini, eggs, parmesan, and half of both mozzarella and cheddar. Stir thoroughly to blend.
03 -
Transfer mixture to a greased 33x23 cm baking dish. Press evenly to form the base. Bake for 20 minutes until set.
04 -
While the base bakes, heat a large saucepan over medium. Add minced beef and onion, cooking until beef is no longer pink, breaking into crumbles. Drain excess fat. Stir in tomato sauce and simmer briefly.
05 -
Evenly spread the meat sauce over the baked zucchini base in the dish.
06 -
Sprinkle reserved mozzarella and cheddar cheeses evenly over sauce. Top with sliced peppers.
07 -
Return dish to oven and bake for approximately 20 minutes until cheese is melted and bubbling.
08 -
Let casserole cool slightly. Slice into portions and serve warm.